[Elecraft] KPA500 problem
Cliff Frescura
cf at cfcorp.com
Tue Feb 16 11:48:04 EST 2016
Can you measure the 110V line voltage on key down? Is it stiff enough?
73,
Cliff K3LL/6
-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Mike
Crownover
Sent: Tuesday, February 16, 2016 8:22 AM
To: 'Nr4c'
Cc: elecraft at mailman.qth.net
Subject: Re: [Elecraft] KPA500 problem
Bill,
Did that, it's set for 110v. I used the yellow tap, which gives me 75 v,
right in the middle of the spec. I did try the other two, but same behavior.
Thnaks,
Mike AD5A
-----Original Message-----
From: Nr4c [mailto:nr4c at widomaker.com]
Sent: Tuesday, February 16, 2016 10:19 AM
To: Mike Crownover <ad5a at gvtc.com>
Subject: Re: [Elecraft] KPA500 problem
What input voltage is it configured for?
Check manual for voltage tap info.
Sent from my iPhone
...nr4c. bill
> On Feb 15, 2016, at 11:11 PM, Mike Crownover <ad5a at gvtc.com> wrote:
>
> I just bought a lightly used KPA500. It arrived from the seller, well
> packed and complete with cables, manuals, etc. I turned the amp on,
> interfaced it with my K3, keyed the radio and the KPA500 immediately
> shut-off. No fault light or error code, nothing. It shuts down just as
> if I had pressed the power button, the fan runs, etc... The antenna is
> resonant 1:1, I've lowered input power to 10 watts, swapped coax,
> hooked it up to another K3, used RCA to RCA cable, the Elecraft cable,
> etc.. When down to 10 watts input, I can tap the paddle like a
> straight key lightly and the amp works, but put two dits together and
> it
shuts down.
>
>
>
> Has anyone had an experienced anything like this. I keep thinking this
> has to be something simple.
>
>
>
> Mike AD5A
>
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